I'm trying to make a character move his arm (which has an IK handle on it), grab a door handle and close the door. I parented a locator to the door handle, then I parent constrained the character's hand to the locator. The problem is that when I key the weight on the constraint to zero (before the character grabs the handle in the timeline) the constraint is still effecting the arm IK. Is there something I'm doing wrong?